This 12mm DC motor with encoder pairs a brushless coreless motor and a planetary gearbox with an integrated encoder in a single assembly, so the same unit that drives the load also reports its position and speed back to your controller. It's rated across a 3V–24V range and sized for mechanisms where a full servo motor is too large and a plain gear motor can't hold position once the load shifts.
This encoder geared motor combines a brushless coreless motor, a planetary gearbox, and an onboard encoder in one 12mm envelope, giving engineers repeatable low-speed motion where a stepper-and-driver stack or a separately mounted encoder wheel will not fit.
| Motor Model | Rated voltage | No-load speed | No-load current | Rated speed | Rated torque | Rated current | Stall torque |
| VDC | r/min | mA | r/min | kg.cm | mA | kg.cm | |
| BCGM1223001 | 12 | 160 | 80 | 118 | 0.8 | 400 | 2.5 |
For additional customization or reference configurations, please feel free to contact us.
A 12mm motor body with an integrated planetary gearbox stage keeps the drive compact while adding reduction.
The product family spans a 3V–24V applied voltage range, so the same platform can be wound for different controller rails.
An integrated encoder supports closed-loop speed or position control, with incremental (A/B) or Hall-based output matched to your controller and confirmed on the drawing.
Gear ratio, output shaft length and interface, lead wire routing and connector style, PCB soldering, and wire harness assembly can all be customized.
Matched to your driver board's logic level, commonly 3.3V or 5V, confirmed at quote stage rather than fixed to one value.
Configured to your target control resolution — tell us the counts-per-revolution you need and it's confirmed on the returned spec sheet.
Assigned per configuration and shown on the technical drawing issued with your quote, since connector and lead conventions vary by customer.
The encoder signal lines run separate from the motor drive leads, which keeps feedback noise-isolated from PWM switching.
The onboard encoder reports shaft position and direction to your controller, enabling PID or similar closed-loop logic instead of guessing at PWM duty cycle.
Each element earns its place: brushless drive removes brush wear, so the motor holds its performance curve over a longer service life without the speed droop that comes from worn contacts, and our planetary gear motors line covers the same reasoning.
The motor body has a fixed diameter of 12mm.
Overall length changes with the selected gear ratio and shaft interface.
Shaft diameter and length are confirmed according to your application requirements.
The ratio is matched to your required output speed and torque.
The motor body is 12mm in diameter. Other mechanical specifications vary with the selected gear ratio and shaft interface.
Share your target output speed and torque, and the corresponding ratio and dimensions will be provided on the technical drawing issued with your quote.
Standard catalog dimensions are a starting point, not a limit — SLW Motor adjusts the motor to your application.
Voltage and winding are matched to your driver's rail voltage across the 3V–24V range.
Gear ratio is adjusted for a different speed/torque balance on the same 12mm body.
Shaft length and end style fit couplers or wheels; lead wires match your routing.
PCB soldering and wire harness integration land the encoder on your driver board.
This work is quoted from sample through small-batch and bulk production.
There's no minimum spec change required to start a conversation.
Brushless coreless with a planetary gearbox isn't right for every project. If your budget or duty cycle doesn't need brush-free longevity, a brushed motor with the same encoder feedback is usually cheaper per unit.
| Option | Drive Type | Gearbox | Best For |
|---|---|---|---|
| This 12mm unit | Brushless coreless | Planetary | Long duty cycles, frequent start/stop, tight inertia budgets |
| 12mm N20 Micro Brushed Gear Motor with Encoder | Brushed | Spur | Lower cost, moderate duty cycle |
| 10mm Micro Brushed Coreless Gear Motor with Encoder | Brushed coreless | Planetary | Smaller envelope than 12mm, still needs low inertia |
If you haven't committed to brushless DC at all, the stepper vs BLDC positioning comparison walks through when a stepper motor answers the same positioning need without an encoder loop.
Medical device actuation that requires smooth, quiet closed-loop motion is a natural fit for this dc motor with encoder.
The encoder geared motor keeps motion smooth and quiet, so the drive suits devices where feedback replaces guesswork.
Learn MoreAutomation and robotic joints use position feedback from the encoder to replace mechanical limit switches.
That feedback lets the joint report and hold its position without extra switch hardware.
Learn MoreSmart device mechanisms with tight enclosure space rely on the compact frame of this encoder geared motor.
The small build leaves room for the mechanism itself inside a tight enclosure.
Learn MorePrecision equipment needs stable low-speed output under variable load, which this dc motor with encoder is built to deliver.
Closed-loop control holds the low-speed output steady even when the load changes.
Learn More
SLW Motor inspects this unit at incoming, in-process, and final stages to hold dimensional and performance consistency across a production batch.
Share your target voltage, gear ratio, encoder resolution needs, and mounting envelope, and SLW Motor's engineering team will confirm the closest standard configuration or scope a custom build — from prototype samples through bulk production.
To start, contact us with your requirements and our team will respond with the closest standard configuration or a custom build scope.
Answers on minimum order quantity, sample lead time, encoder resolution, and connector or wiring options for this dc motor with encoder.
Tell us your project or application requirements, and our team will get back to you with technical support, product recommendations, or a customized motor solution.
